Alex Trebek's cancer diagnosis prompts outpouring of support

Following news that Alex Trebek has been diagnosed with stage 4 pancreatic cancer, celebrities and former "Jeopardy" contestants took to social media to share messages of support for the longtime "Jeopardy" host.

"Wheel of Fortune" host Pat Sajak

The Sajak family is deeply saddened to hear of Alex Trebek’s struggle with cancer. Our hearts go out to him and his family. But there is no one I know who is stronger and more determined, and I would never bet against him. We, and the entire country, are pulling for you, Alex.

The clue: “He has the strength and determination to beat his cancer diagnosis.” The response: “Who is Alex Trebek?” My family and I are sending love and tons of healing prayers to you Alex. pic.twitter.com/VTA435hHel

Our hearts go out to you, #Alextrebek, a member of our Disney-ABC family for so long. We admire your courage and determination, and in the words of Winston Churchill: “never, never, never, never give up!”